Serial crimes are crimes of a repetitive nature. Serial murder, serial rape and serial arson are crimes regarded as serial crimes. However, according to criminologists, a habitual offender or a career criminal is not necessarily a serial criminal. Consistency of Serial Crime While the serial killers may leave an unpredictable and eccentric impression to most people, an obvious consistent pattern appears on the serial offender' killing behaviors. Specifically, the serial killers reveal the consistency of criminal behaviors through the dimension of the location selection, victim proclivity, overall behavioral patterns. Location Selection The potential crime locations usually contain the characteristics of the limited diversity and the narrow geographical range. Based on the analysis on the locations that the serial offenders adopt to encounter and release their victims, the consistency and the limited diversity involve in these locations across a series of crimes. To further expand upon the limited diversity and define the scope of the criminal sites, several researches provide some numerical data. One research clarifies the particular range of the homicide case locations selected by the offenders. This research concludes that the majority of the serial killers lives within 10 kilometers from the crime locations. Another research claims that the offenders often choose a place near to their accommodations as the crime sites (i.e., the median distance between the offender's home and the criminal spot is 3 kilometers). Victim Proclivity "Marginalization" and "unfamiliarity" play a role in how serial killers select their target victims. The marginalized people refer to the individuals who are excluded by the modern institution based on the excuse of reprobation and censure. Vagrants, the homeless, prostitutes, migrant workers, and homosexuals become the major members of marginalized people. The unfamiliar people simply mean the group that the serial killers lack the previous interaction with. Based on the data collected from 97 victims and 21 serial killers, the strangers usually become their priority victim choice for the serial murderers. Behavioral Patterns Instead of summarizing certain features shared among the killing behaviors of the serial murderers, researches indicate the consistent behavioral patterns from three dimensions. The serial homicide offenders express relatively consistent behaviors in aggressive actions during serial homicides. The scholars in the field of criminology and psychology often categorize the killing behaviors as aggressive actions, which expresses that every criminal conducts similar killing behavior patterns in his/her murdering series. A higher possibility of consistency in the behavioral features